1 /* Copyright (c) 2014 Percona LLC and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or
4 modify it under the terms of the GNU General Public License
5 as published by the Free Software Foundation; version 2 of
6 the License.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
16
17 #include <syslog.h>
18 #include <string.h>
19 #include "audit_handler.h"
20
21 typedef struct audit_handler_syslog_data_struct audit_handler_syslog_data_t;
22
23 struct audit_handler_syslog_data_struct
24 {
25 size_t struct_size;
26 int priority;
27 logger_prolog_func_t header;
28 logger_epilog_func_t footer;
29 };
30
31 static int audit_handler_syslog_write(audit_handler_t *handler,
32 const char *buf, size_t len);
33 static int audit_handler_syslog_flush(audit_handler_t *handler);
34 static int audit_handler_syslog_close(audit_handler_t *handler);
35
36
audit_handler_syslog_open(audit_handler_syslog_config_t * opts)37 audit_handler_t *audit_handler_syslog_open(audit_handler_syslog_config_t *opts)
38 {
39 audit_handler_t *handler= (audit_handler_t*)
40 calloc(sizeof(audit_handler_t) + sizeof(audit_handler_syslog_data_t), 1);
41 if (handler != NULL)
42 {
43 audit_handler_syslog_data_t *data=
44 (audit_handler_syslog_data_t*) (handler + 1);
45 MY_STAT stat_arg;
46
47 data->struct_size= sizeof(audit_handler_syslog_data_t);
48 data->priority= opts->priority;
49 data->header= opts->header;
50 data->footer= opts->footer;
51 openlog(opts->ident, 0, opts->facility);
52 memset(&stat_arg, 0, sizeof(stat_arg));
53 opts->header(&stat_arg, NULL, 0);
54 handler->data= data;
55 handler->write= audit_handler_syslog_write;
56 handler->flush= audit_handler_syslog_flush;
57 handler->close= audit_handler_syslog_close;
58 }
59 return handler;
60 }
61
62 static
audit_handler_syslog_write(audit_handler_t * handler,const char * buf,size_t len)63 int audit_handler_syslog_write(audit_handler_t *handler,
64 const char *buf, size_t len)
65 {
66 audit_handler_syslog_data_t *data=
67 (audit_handler_syslog_data_t*) handler->data;
68 DBUG_ASSERT(data->struct_size == sizeof(audit_handler_syslog_data_t));
69 syslog(data->priority, "%s", buf);
70 return len;
71 }
72
73 static
audit_handler_syslog_flush(audit_handler_t * handler)74 int audit_handler_syslog_flush(audit_handler_t *handler)
75 {
76 audit_handler_syslog_data_t *data=
77 (audit_handler_syslog_data_t*) handler->data;
78 MY_STAT stat_arg;
79 memset(&stat_arg, 0, sizeof(stat_arg));
80 data->header(&stat_arg, NULL, 0);
81 data->footer(NULL, 0);
82 return 0;
83 }
84
85 static
audit_handler_syslog_close(audit_handler_t * handler)86 int audit_handler_syslog_close(audit_handler_t *handler)
87 {
88 audit_handler_syslog_data_t *data=
89 (audit_handler_syslog_data_t*) handler->data;
90 data->footer(NULL, 0);
91 closelog();
92 free(handler);
93 return 0;
94 }
95